Shows worth watching that got cancelled during or after their first season ...

There have been quite a few shows that never made it beyond the first season that I really enjoyed watching. Some got cancelled mid-season, while others simply didn't get renewed for a second season. I have watched many of these shows after the fact, knowing full well that the story would never be told to completion. Despite this, I found a lot of them to be well worth while.

Some examples (in no particular order):

New Amsterdam
Journeyman
Now and Again
Life on Mars (US version)
Freaks & Geeks
My So-Called Life
Day Break
Grosse Pointe
The Tick (live action version)
Invasion
Harsh Realm
Wonderfalls
Firefly (this one goes without saying)

I'm always on the lookout for another rare gem that I may have missed.